{"uid":"cap_xPZa4YeINo8NXlRsqgUDQ","slug":"evm-transaction-explainer-5413f31d","name":"EVM Transaction Explainer","description":"Decode and explain any EVM blockchain transaction across 11 chains (Base, Ethereum, Arbitrum, Optimism, Avalanche, Polygon, Mantle, Monad, Plasma, BSC, Hyperliquid). Get a human-readable summary of swaps, transfers, approvals, DeFi interactions, and more.","url":"https://tools-agent-x402-production.up.railway.app/tx-explainer","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["txHash"],"properties":{"chain":{"enum":["base","ethereum","arbitrum","optimism","avalanche","polygon","mantle","monad","plasma","bsc","hyperliquid"],"type":"string","description":"Blockchain network (default: base). 11 EVM chains supported."},"txHash":{"type":"string","pattern":"^0x[a-fA-F0-9]{64}$","description":"Transaction hash (0x-prefixed, 64 hex characters)"},"outputLevel":{"enum":["summary","detailed"],"type":"string","description":"'summary' = one-liner, 'detailed' = full breakdown"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["status"],"properties":{"chain":{"type":"string","description":"Blockchain name"},"error":{"type":"string","description":"Error message if failed"},"status":{"enum":["success","failed"],"type":"string"},"txHash":{"type":"string","description":"Transaction hash"},"details":{"type":"object","description":"Structured decode — from, to, value, method, selector, signature, pattern, events (always included; interpretation prose only when outputLevel=detailed)"},"summary":{"type":"string","description":"Human-readable transaction summary"},"explorerUrl":{"type":"string","description":"Link to block explorer"}}}}}}},"responseSchema":null,"example":{"request":{"input":{"type":"http","method":"POST","queryParams":{"chain":"ethereum","txHash":"0x5c504ed432cb51138bcf09aa5e8a410dd4a1e204ef84bfed1be16dfba1b22060","outputLevel":"summary"}}},"response":{"chain":"Ethereum","txHash":"0x5c504ed432cb51138bcf09aa5e8a410dd4a1e204ef84bfed1be16dfba1b22060","summary":"Transferred less than 0.0001 ETH to 0x5df9","explorerUrl":"https://etherscan.io/tx/0x5c504ed432cb51138bcf09aa5e8a410dd4a1e204ef84bfed1be16dfba1b22060"}},"exampleRequest":{"chain":"ethereum","txHash":"0x5c504ed432cb51138bcf09aa5e8a410dd4a1e204ef84bfed1be16dfba1b22060","outputLevel":"summary"},"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_NjIG26EWSloyrIeRdhsWL","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Decodes and explains any EVM blockchain transaction in human-readable language across 11 supported chains","exampleAgentPrompt":"Can you explain what happened in this Base transaction — 0x4a3f1c2d9e8b7a0f5c6d2e1b9f3a4c7d8e2f1b0a3c5d6e7f8a9b0c1d2e3f4a5b — give me a detailed breakdown?","exampleUseCases":null,"resultDescription":"Returns a JSON object containing the transaction hash, the chain it occurred on, a human-readable summary of what the transaction did (e.g. swap, transfer, approval, DeFi interaction), and a link to the blockchain explorer for that transaction.","failureModes":["Invalid or malformed transaction hash (not 0x-prefixed or not 64 hex chars) returns an error","Transaction hash does not exist on the specified chain","Unsupported chain specified outside the 11 supported networks","Network timeout or RPC node unavailability for the target chain","Payment failure — insufficient USDC balance for the $0.01 per-call fee"],"whenToPreferThis":"Use this endpoint when you need a plain-English explanation of what an EVM transaction did — especially for swaps, transfers, approvals, or DeFi interactions across Base, Ethereum, Arbitrum, Optimism, Avalanche, Polygon, Mantle, Monad, Plasma, BSC, or Hyperliquid. Ideal when a user pastes a transaction hash and wants to understand it without reading raw calldata or logs.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:35:33.561Z","isFirstParty":false}